JS Library Reference vs CardFlip
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JS Library Reference
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**JSLibrary - Die ultimative JavaScript-Lern-App** Meistere JavaScript mit der umfassendsten mobilen Referenz- und Lern-App! JSLibrary bietet dir über 131 JavaScript-Funktionen und -Methoden mit detaillierten Erklärungen, Code-Beispielen und interaktiven Lerntools - komplett auf Deutsch und Englisch. ** HAUPTFUNKTIONEN** **Umfassende JavaScript-Referenz** • 131+ Funktionen und Methoden mit vollständiger Dokumentation • 16 übersichtliche Kategorien: Arrays, Strings, Objekte, DOM, Async/Promises, ES6+, Math, JSON, Console, und mehr • Syntax-Beispiele mit Hervorhebung • ES-Version (ES5, ES6, ES8, etc.) für jede Funktion • Über 390 Code-Beispiele mit Erklärungen **Interaktive Lernmodule** • Quiz-System mit Multiple-Choice und Lückentext-Fragen • Flashcards mit Spaced-Repetition-System • 23 Code-Templates in 8 Kategorien • Kategoriebasierte Filterung für gezieltes Lernen **Fortschritts-Tracking** • Verfolge deinen Lernfortschritt in Echtzeit • Streak-System für tägliches Lernen • Statistiken zu meistbesuchten Funktionen • Lernhistorie mit Study Sessions • Exportiere und importiere deine Daten **Vollständig Zweisprachig** • Nahtloser Wechsel zwischen Deutsch und English • Alle Beschreibungen, UI-Elemente und Lernmodule in beiden Sprachen • Perfekt für deutschsprachige Entwickler, die auch auf Englisch arbeiten **Persönliche Anpassungen** • Markiere Funktionen als Favoriten • Füge eigene Notizen hinzu • Erstelle Custom-Tags für Organisation • Markiere gelernte Funktionen • iCloud Sync - alle Daten synchronisiert auf deinen Geräten **Moderne Benutzeroberfläche** • Natives SwiftUI-Design • Dark Mode Unterstützung • Intuitive Navigation • Haptic Feedback für bessere UX • Syntax-Highlighting für Code **PERFEKT FÜR:** • JavaScript-Einsteiger, die die Grundlagen lernen • Fortgeschrittene Entwickler als Nachschlagewerk • Studierende in Web-Entwicklung-Kursen • Alle, die JavaScript beherrschen möchten **KATEGORIEN:** Array-Methoden • String-Methoden • Objekt-Methoden • DOM-Manipulation • Async/Promises • ES6+ Features • Math & Zahlen • JSON • Console-Methoden • Set & Map • Datum & Zeit • LocalStorage • RegExp • Type Checking • Moderne Operators • Classes **KEINE WERBUNG, KEINE ABOS** Einmalige App mit allen Features inklusive. Keine versteckten Kosten, keine In-App-Käufe.
CardFlip
Create and study custom flashcards with spaced repetition to optimize memorization. Offers multiple study modes like quiz and matching, with offline access and detailed progress tracking. Designed for students to learn vocabulary, terms, and formulas efficiently.
- Custom flashcard creation
- Spaced repetition system
- Multiple study modes (Flip, Quiz, Match, Type)
- Offline study capabilities
- Progress tracking and analytics
- Import/export flashcards
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Make your own flashcards in seconds and let spaced repetition tell you exactly what to review today. CardFlip is a free flashcard maker for students who want to memorize words, terms and formulas without an account, without a paywall and without an internet connection. FOUR WAYS TO STUDY YOUR CARDS - Flip: classic flashcards with a smooth 3D turn. Tap to reveal the answer, then rate how confident you were from 1 to 5. - Quiz: multiple-choice questions built automatically from your own study cards. - Match: find the front-and-back pairs in a memory grid and beat your own time. - Type: write the answer from memory to test real recall, not recognition. SPACED REPETITION THAT DOES THE PLANNING Spaced repetition is the reason flashcards work. CardFlip schedules every card for the day you are about to forget it, so a few minutes of revision each morning replaces a night of cramming. Each deck shows how many cards are due today, so you always know where to start. BUILT FOR REAL STUDYING - Unlimited decks and unlimited study cards. - An optional hint on any card for when you are close but not quite there. - Tag decks by subject - Spanish, biology, anatomy, history, GRE, SAT. - Search every card in every deck at once. - Import hundreds of cards from a CSV or a tab-separated file, export any deck as JSON. LEARN VOCABULARY OFFLINE Every deck lives on your device. Language learning cards work on a plane, on the metro and in a basement lecture hall. Nothing to sync, nothing to log in to. TRACK THE WORK - A daily streak, and a record of your best one. - XP for every card studied and every quiz answered. - Achievements as your decks fill up. - A weekly chart of the minutes you actually put in. - A progress ring on every deck showing how much of it you have mastered. PRIVACY FIRST Your decks and your progress stay on your device. No account. No personal data collected. Your study cards are yours alone. MADE FOR STUDENTS Light and dark themes, smooth flip animations, tuned haptics and adjustable card text - the small things that make revision cards something you actually open. Whether you are learning a language, prepping for the GRE or SAT, memorizing medical terms, revising for school exams or building vocabulary, CardFlip is your offline study companion. Download CardFlip and start memorizing, one card at a time.
Screenshots
Verdict
The clearest difference is iOS requirement: CardFlip at 15.0 against JS Library Reference's 17.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | JS Library Reference | CardFlip |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.5 (4 ratings) — better |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | — | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Roger Rub | Gunawan Santoso |
In-app purchases
JS Library Reference
No in-app purchases
CardFlip
No in-app purchases
Questions
Is JS Library Reference free?
Is CardFlip free?
Do JS Library Reference or CardFlip have ads?
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